
#include <muduo/net/TcpServer.h>
#include <muduo/net/EventLoop.h>
#include <muduo/net/TcpConnection.h>
#include <muduo/net/Buffer.h>

#include <iostream>
#include <string>
#include <unordered_map>

class DictServer
{
public:
    DictServer(int port)
        : _server(&_baseloop, muduo::net::InetAddress("0.0.0.0", port),
                  "DictServer", muduo::net::TcpServer::kReusePort)
    {
        //设置链接(链接建立/管理) 的回调 
        _server.setConnectionCallback(std::bind(&DictServer::onConnection, this, std::placeholders::_1));
        //设置链接消息的回调
        _server.setMessageCallback(std::bind(&DictServer::onMessage, this,
        std::placeholders::_1, std::placeholders::_2, std::placeholders::_3));
    }

    void start()
    {
        _server.start();  // 先开始监听
        _baseloop.loop(); // 开始死循环事件监控
    }

private:
    void onConnection(const muduo::net::TcpConnectionPtr &conn)
    {
        if (conn->connected())
        {
            std::cout << "链接建立！\n";
        }
        else
        {
            std::cout << "链接断开! \n"
                      << std::endl;
        }
    }

    void onMessage(const muduo::net::TcpConnectionPtr &conn, muduo::net::Buffer *buf, muduo::Timestamp)
    {
        static std::unordered_map<std::string, std::string> dict_map = {
            {"hello", "你好"},
            {"world", "世界"},
            {"bite", "比特"}};

        std::string msg = buf->retrieveAllAsString();
        std::string res;
        auto it = dict_map.find(msg);
        if (it != dict_map.end())
        {
            res = it->second;
        }
        else
        {
            res = "未知单词";
        }
        conn->send(res);
    }

private:
    muduo::net::EventLoop _baseloop;
    muduo::net::TcpServer _server;
};

int main()
{
    DictServer server(8888);

    server.start();
    return 0;
}